1 files changed, 178 insertions, 0 deletions
diff --git a/util/cbfstool/lzma/endian.hh b/util/cbfstool/lzma/endian.hh
new file mode 100644
index 0000000000..425374d423
--- /dev/null
+++ b/util/cbfstool/lzma/endian.hh
@@ -0,0 +1,178 @@
+#ifndef bqtEndianHH
+#define bqtEndianHH
+
+#ifndef __STDC_CONSTANT_MACROS
+#define __STDC_CONSTANT_MACROS /* for UINT16_C etc */
+#endif
+
+#include <stdint.h>
+
+#if defined(__x86_64)||defined(__i386)
+#define LITTLE_ENDIAN_AND_UNALIGNED_ACCESS_OK
+#else
+#undef LITTLE_ENDIAN_AND_UNALIGNED_ACCESS_OK
+#endif
+
+#ifdef WIN32
+# define LL_FMT "I64"
+#else
+# define LL_FMT "ll"
+#endif
+
+
+static inline uint_fast16_t get_8(const void* p)
+{
+    const unsigned char* data = (const unsigned char*)p;
+    return data[0];
+}
+static inline uint_fast16_t get_16(const void* p)
+{
+  #ifdef LITTLE_ENDIAN_AND_UNALIGNED_ACCESS_OK
+    return *(const uint_least16_t*)p;
+  #else
+    const unsigned char* data = (const unsigned char*)p;
+    return get_8(data)  | (get_8(data+1) << UINT16_C(8));
+  #endif
+}
+static inline uint_fast16_t R16r(const void* p)
+{
+  #ifdef BIG_ENDIAN_AND_UNALIGNED_ACCESS_OK
+    return *(const uint_least16_t*)p;
+  #else
+    const unsigned char* data = (const unsigned char*)p;
+    return get_8(data+1)  | (get_8(data) << UINT16_C(8));
+  #endif
+}
+static inline uint_fast32_t R24(const void* p)
+{
+    /* Note: This might be faster if implemented through R32 and a bitwise and,
+     * but we cannot do that because we don't know if the third byte is a valid
+     * memory location.
+     */
+    const unsigned char* data = (const unsigned char*)p;
+    return get_16(data) | (get_8(data+2) << UINT32_C(16));
+}
+static inline uint_fast32_t R24r(const void* p)
+{
+    const unsigned char* data = (const unsigned char*)p;
+    return get_16(data+1) | (get_8(data) << UINT32_C(16));
+}
+static inline uint_fast32_t get_32(const void* p)
+{
+  #ifdef LITTLE_ENDIAN_AND_UNALIGNED_ACCESS_OK
+    return *(const uint_least32_t*)p;
+  #else
+    const unsigned char* data = (const unsigned char*)p;
+    return get_16(data) | (get_16(data+2) << UINT32_C(16));
+  #endif
+}
+static inline uint_fast32_t R32r(const void* p)
+{
+  #ifdef BIG_ENDIAN_AND_UNALIGNED_ACCESS_OK
+    return *(const uint_least32_t*)p;
+  #else
+    const unsigned char* data = (const unsigned char*)p;
+    return get_16(data+2) | (get_16(data) << UINT32_C(16));
+  #endif
+}
+
+#define L (uint_fast64_t)
+
+static inline uint_fast64_t get_64(const void* p)
+{
+  #ifdef LITTLE_ENDIAN_AND_UNALIGNED_ACCESS_OK
+    return *(const uint_least64_t*)p;
+  #else
+    const unsigned char* data = (const unsigned char*)p;
+    return (L get_32(data)) | ((L get_32(data+4)) << UINT64_C(32));
+  #endif
+}
+static inline uint_fast64_t R64r(const void* p)
+{
+  #ifdef BIG_ENDIAN_AND_UNALIGNED_ACCESS_OK
+    return *(const uint_least64_t*)p;
+  #else
+    const unsigned char* data = (const unsigned char*)p;
+    return (L get_32(data+4)) | ((L get_32(data)) << UINT64_C(32));
+  #endif
+}
+
+#undef L
+
+static inline uint_fast64_t get_n(const void* p, unsigned bytes)
+{
+    const unsigned char* data = (const unsigned char*)p;
+    uint_fast64_t res(0);
+    switch(bytes)
+    {
+        case 8: return get_64(p);
+        case 4: return get_32(p);
+        case 2: return get_16(p);
+        case 7: res |= ((uint_fast64_t)get_8(data+6)) << 48;
+        case 6: res |= ((uint_fast64_t)get_8(data+5)) << 40;
+        case 5: res |= ((uint_fast64_t)get_16(data+3)) << 24;
+        case 3: res |= ((uint_fast64_t)get_16(data+1)) << 8;
+        case 1: res |= get_8(data);
+    }
+    return res;
+}
+
+static void put_8(void* p, uint_fast8_t value)
+{
+    unsigned char* data = (unsigned char*)p;
+    data[0] = value;
+}
+static void put_16(void* p, uint_fast16_t value)
+{
+  #ifdef LITTLE_ENDIAN_AND_UNALIGNED_ACCESS_OK
+    *(uint_least16_t*)p = value;
+  #else
+    unsigned char* data = (unsigned char*)p;
+    put_8(data+0, value   );
+    put_8(data+1, value>>8);
+  #endif
+}
+static void W24(void* p, uint_fast32_t value)
+{
+    unsigned char* data = (unsigned char*)p;
+    put_16(data+0, value);
+    put_8(data+2,  value >> UINT32_C(16));
+}
+static void put_32(void* p, uint_fast32_t value)
+{
+  #ifdef LITTLE_ENDIAN_AND_UNALIGNED_ACCESS_OK
+    *(uint_least32_t*)p = value;
+  #else
+    unsigned char* data = (unsigned char*)p;
+    put_16(data+0, value);
+    put_16(data+2, value >> UINT32_C(16));
+  #endif
+}
+static void put_64(void* p, uint_fast64_t value)
+{
+  #ifdef LITTLE_ENDIAN_AND_UNALIGNED_ACCESS_OK
+    *(uint_least64_t*)p = value;
+  #else
+    unsigned char* data = (unsigned char*)p;
+    put_32(data+0, (value));
+    put_32(data+4, (value >> UINT64_C(32)));
+  #endif
+}
+
+static inline void put_n(void* p, uint_fast64_t value, unsigned bytes)
+{
+    unsigned char* data = (unsigned char*)p;
+    switch(bytes)
+    {
+        case 8: put_64(p, value); break;
+        case 7: put_8(data+6, value>>48);
+        case 6: put_8(data+5, value>>40);
+        case 5: put_8(data+4, value>>32);
+        case 4: put_32(p, value); break;
+        case 3: W24(p, value); break;
+        case 2: put_16(p, value); break;
+        case 1: put_8(p, value); break;
+    }
+}
+
+#endif